save project

snake.py

@@ -12,16 +12,44 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+right = pygame.image.load('right.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 x,y=240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
+setheading = "right"
+snake_head = right
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x+=30
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !="left":
+                setheading = "right"
+                snake_head = right
+            if event.key == locals.K_LEFT and setheading !="right":
+                setheading = "left"
+                snake_head = left
+            if event.key == locals.K_UP and setheading !="down":
+                setheading = "up"
+                snake_head = up
+            if event.key == locals.K_DOWN and setheading !="up":
+                setheading = "down"
+                snake_head = down
+        if setheading = "right":
+            x +=30
+            elif setheading="left":
+                x-=30
+            elif setheading="up":
+                y+=30
+            elif setheading="down":
+                y-=30
+    
     position.append((x,y))
     position.pop(0)
-    
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去